Electromechanical regulator for electric tension.



J. M. GQHERRGOTT.

ELECTROMECHANICAL REGULATOR FOR ELECTRIC TENSION.

APPLICATION FILED APR. 27, 1906.

901,613," I Patented 0ct.20,1908.

3 SHEETS-SHEET Z.

Fig.6. 8

J. M. G. HERRGOTT.

ELEGTROMEGHANIGAL REGULATOR FOR ELEGTBIG TENSION.

APPLICATION Hum a-1,1906

Patented Oct. 20, 1908.

. s swims-sum s.

JOSEPH MICHEL GAMILLE HERRGOTT, OF VALDOIE, FRANCE.

ELEcTRoM onAnIcAL REGULATOR EoR ELECTRIC TENSION.

Specification 01 Letters Patent.

Patented Oct. 20, 1908.

Application filed Apri1 27, 1906. Serial No. 814:,307.

at Valdoie, Territory of Belfort, Republic-of France, engineer, have invented Electromechanical Regulators of Electric Tension,

ing with electric current.

of which the following is a full, clear, and exact description.

The present invention has for its object an electro-mechanical regulator of electric tension, for the purpose of regulating the tension of an electric current furnished by a dynamo generator, by acting upon the distribution of the motive force em loyed whether water, gas, steam, internal combustion or electric motors.

This regulator consists in principle of a valve rod operated directly by electricity which can assume four positions correspondthe four following cases: 1st dead point when the tension has its normal value; 2nd it accelerates the speed of the motor when the tension lowers; 3rd it reduces the speed of the motor when the tension rises; 4th it arrests the motor in case of absence of This action of the valve rod upon the distribution is immediate without any loss of the motor 'force employed. It maintains constant the speed of a motor of any character by acting, on its distribution by the aid of-a small auxiliary dynamo when it is not used in connection with an electric plant. 7

Beyond its action, which is as immediate as that of the main electric current, this regulator by a regulation effected in position andwithout previous calculations, enables to take into consideration the inertia of masses in motion in order to avoid oscillationsj -around the point of regulation.

As an example, this invention is represented the accompanying drawing in which: i r

Figures 1, 2, 3 and 4 are at their lower parts vertical sections on the line AA of the plan and at their intermediate parts are vertical sections on the lines BB and CC of this plan; these sections show the :four positions of the valve rod. Fig. 5 is a plan of the same and Fig. 6 is a horizontal section on the line D-D of Fi 1. Fig. 7 is a diagrammatical view of thewhole apparatus.

In Fig. 7 1 represents the regulator immersed in a closed reservoir 4 filled with oil;

'ligpid which has acted is ma a ump 2 operated by a' pulley 3 drawsthe oil from this reservoir and conveys 1t lnto the regulator. This oil by one of the pipes 6 or 7 reaches a servomotor (or steam steering engine) 5 and returns to the regulator by the other pipe. The servomotor controls by a rod 8 a toothedwheel 9 the valve ,,10 placed on the inlet pipe 11 of the distribution 12 of a motor 13. To the shaft 14 of this motor is coupled the shaft of the dynamo 15 whence the wires 16 and 17 carrying the current to be regulated lead. The solenoid 18 is placed in a shunt taken from these wires 16 and 17. In this shuntare placed the rheostat 19 and the circuit breakers 20.

As shown in thedrawing, the regulator is composed of a valve box a with vertical axis, formed with a series of appro riate stages, and of valve rod 6 provided wit equilibrated valves 0; this rod forms part of a core d movable within a fixed solenoid ethe vertical axis of which coincides with that of the valve box, this solenoid e is in derivation from the main electric current.

The valve box receives a liquid pressure which enters throu h the tubular connectlon f and is generally oi oil obtained by p1ston or rotary ump or accumulator, generally driven by the motor to be regulated.

Through tubular connection it the liquid under'p'ressure is-delivered to a double-actingpistoncpum or to a rotary pump to act upon the istri ution 'of the motor and reduce its speed by closing it. Sim larly through the tubular connection 2 the liquld is delivered to act in reverse direction and increase the speed of the motor by opening its distribution. When one of these actions is produced, the correspondin escape of the do through the or tubular connection ?1 or k in reverse direction to leave by the auxiliary tubular connections j or k by assing the regulable valves Z or m in the irection of the arrows 1, 2. The opening of the valves Z or m 1s regulated by acting upon the knobs n, 0. The tubes p, 9 connect the ends of the valve box with the chambers of the regulable valves 1, m. The sides of this valve box are provided with small orifices 1" and s.

The working of the regulator is as follows: 1st. Suppose the electric tension at its normal value the solenoid in-derivation'e holds equilibrium its core (1 and consequently .The liqpid the valve rod at the dead point, see 1. pressure arriving at f escapes by the tu ular connections 7' and 7c an produces no action in the tubular connectlons h and 11 nor in the tubes p and q."

2nd. Suppose the electric tension lowers (see Fig. 2), the solenoid e no longer suflicientli attracts its core d which descends slight y with the valve rod; the liquid pressure arriving at f then passes into 1., as mdicated by arrow 3, acts to open the distribution of the motor and returns through the tubular connection it and outlet k to. flow awa after having fulfilled its purpose to acce erate the speed of the motor. Nevertheless if the corresponding valve m is slightly closed b turning. the knob 0 there is produced in t outlet a small counterpressure which through the ipe is transmitted to the lower part of t e va ve rod as indicated by the arrow 4; this counter ressure slightly destroys the equilibrium 0 the valve rod and tends to raise it by thus acting j contrarily to the solenoid e which allowed it to descend; if this counter ressure becomes the stronger, the valve ro remounts under its action to the dead point and'the liquid escapes; by this fact the counterpressure becomes naught and the solenoid e allows its core d to r'e-descend; there are thus roduced a series of intermissions which e ect the regulation, by taking count, of the force of inertia of the masses in movement according to the opening which has been given to the valve m and by avoiding opening too much the distribution and passing beyond the point of regulation.

3rd. Suppose the electric tension to increase (see Fig. 3) the solenoid e attracts more forcibl its core (1 which rises slightly with the va ve rod, the liquid pressure arriving at f then passes to h, as indicated by the arrow 5, acts to close the distribution of the motor and returns throu h the tubular connection 1' and the outlet 1 t6 flow awa after havin completed its work to the speed 0 the motor. Nevertheless if the corresponding valve Z is slightly closed b turning the knob 12;, thereis produced a sm counter pressure which, by the pipe p is transmitted to the upper part of the valve red, as indicated by t e arrow 6; this counter pressure slightly destroys the equilibrium of.

the valve rod and tends to cause it to de scend by thus acting contrarily to the solenoide; if this counterpressure becomes the stronger the valve rod redescends under its action to the dead point and the liquid pressure escapes; by this fact the counterpressure becomes naught and the solenoid e a bin attracts its core (1; there are thus pro uced a series of intermissions efiecting the re lation by taking count, as previously 0 the force of inertia of the masses in movement according to the opening left to the valve 1 and by avoiding the too much closing 'of the distribution.

4th. Suppose the electric tension to be I: voluntaril or accidentally missing (see Fig.

4); the so enoid e frees its core d and consebottom; in this position the liquid pressure arriving at f then passes to h, acts to close the distribution of the motor and returns by the tubular connection '5. and the outlet 7' to flow away after having comgleted its work by arresting the motor whic cannot race; the corres onding valve Z is slightly closed, being re ated as previously; there is then produce a small counterpressure which rises y the pipe p and escapes through the sa1d openings provided and without any action on the valve rod. The auxiliary actlon may be better obtained by lac' in the current in derivation of the so enoi 18 (see Fig. 7) a small rheostat 19 (see Fig. 7) the proportional resistances of which to the losses in charge of the installation will increase with the opening of the distribution to proportion the normal tension to the delivery in the distributions of electric current.

quently, the valve rod which descends to the 1 One of the wires in derivation feedingthe solenoid may points of the installation and be provi ed with interrupters; by opening one of them,

pass to the varlous princi al.

the current W'Lll not arrive at the solenoid and the regulator will close the-distribution ofthe motor which will thus be arrested at will, even at a distance.

The arrangements above described are given as an example; the'forms, dimensions and arrangements of detail may be varied according to circumstances without modifying the principle of the invention.

1. In an electro mechanical regulator, the

' combination of a solenoid, a movable core, a slide rod ri 'd with this core and carrying the slide multiple va ves, a box conta' rod and-having a conduit, an admission pipe for fluid under pressure connected to said conduit, a servo-motor and two pipes connecting the servo-motor with the box.

2. In an electro-mechanical regulator, the combination of a solenoid, a movable core,- a

slide rod ri 'd with the core and carrying.

multiple va ves, a box containing the slide rodan admission pipe to the box, a servo-motor two ipes connecting the said motor with the ox, said V for fluid under pres- 1 sure, a pipe connecting said admission pipel box having auxiliary exit openings of varying volume for the fluid under pressure. p

3. x In an electro-mechanical regulator, the combination of a solenoid a rheostat" laced in the circuit of the of the e ectric coil, a movable core, -a slide rod this core and car-Tug multiple valves,.aibox containing the s de rod furnished with a conduit connected with an admission pipe of fluid under pressure and two conduits joined mission pipe of fluid under pressure and two 10 to a servo-motor. I 1 conduits joined to a servo-motor.

4. In an electro-niechanical re later, the v The foregoing specification of my electro combination-of a. solenoid, of a r dostat and mechanical 're later of electric tension 5 interrupters laced in the circuit of the windsigned by me thisv 13th day of April 1906.

of the so enoid, .a' movablecore, a slide l JOSEPH MICHEL OAMILLE HERRGOTT/ r0 n d with this core and carrying mult1- Witnesses: I

ple vs, ves, a; box containing the slide rod fur I HANSON C. Coxn, nished with a conduit connected with an ad- I MAURICE 4H. PIGNET. 

